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Top 23 Rust Language Projects
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Project mention: Dev log 20: Deleting 180k lines and chasing socket leaks: A week in the OSS trenches | dev.to | 2026-09-06
Rust Compiler: I opened PR #162123 to report unsatisfied opaque item bounds instead of a generic type mismatch under the -Znext-solver. Contributing to the Rust compiler is always a "hold your breath" moment, but it's the best way to learn how the magic happens.
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AppSignal
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slint
Slint is an open-source declarative GUI toolkit to build native user interfaces for Rust, C++, JavaScript, or Python apps.
I've been using Slint as UI toolkit for Rust and so far liked it, coming as I am from the Qt/QML world.
However, at the beginning I had to choose between Slint[1] and egui[2] (which this project uses)
[1]: https://slint.dev/
[2]: https://www.egui.rs/
Anyone has experience in both and is able to drop some thoughts on their strengths & weaknesses for mid-to-large projects?
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Interesting proposal, but with severe risks: becoming dependent on a single specific compiler and rustc could include malicious code that isn’t obvious to an outside auditor. See https://aeb.win.tue.nl/linux/hh/thompson/trust.html Ken Thompson demonstrated this.
But what will the future of RustPython be? https://github.com/RustPython/RustPython/
Major shifts like this are complex, not so only from a technical perspective but even more because a lot of humans with different opinions are involved. But radical changes are sometimes needed to be innovative again.
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melody
Melody is a language that compiles to regular expressions and aims to be more readable and maintainable
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Project mention: Gluon: a GPU programming language based on the same compiler stack as Triton | news.ycombinator.com | 2025-09-17
Not to be confused with gluon the embbedable language in Rust: https://github.com/gluon-lang/gluon
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Kargo
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Project mention: Effect Systems vs. Print Debugging: A Pragmatic Solution | news.ycombinator.com | 2025-09-25
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Huh, of all of my projects, I never expected this to make it to HN. Not the original author but the maintainer, so ask away.
Unfortunately, I've not had as much time to devote to this for a while. There are also a lot of weird cases that aren't too well defined or that the Ruby implementation shines through that also have me dissatisfied with Liquid. That and wanting to make it easier to extend with an embedded language. A way to solve this and my annoyance is to create a template language using an existing embedded language. I'm tempted by koto because it already has something like `|` operator (`->`) and isn't just "Rust, but embeddable" (Rust is an implementation detail; it shouldn't bleed through).
[0] https://koto.dev/
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Project mention: Show HN: OtterLang – Pythonic scripting language that compiles to native code | news.ycombinator.com | 2025-11-08
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LO
LO - small programming language targeting WASM that aims to be as simple as possible (by glebbash)
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pen
The parallel, concurrent, and functional programming language for scalable software development (by pen-lang)
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dictpress
A stand-alone web server application for building and publishing full fledged dictionary websites and APIs for any language.
Project mention: Ask HN: What Are You Working On? (January 2026) | news.ycombinator.com | 2026-01-11- https://dict.press - A (language) dictionary publishing and management system.
- WIP: A FOSS, self-hosted Luma alternative (for use across our community initiatives)
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endbasic
BASIC environment with a REPL, a web interface, a graphical console, and RPi support written in Rust
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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Rust Language discussion
Rust Language related posts
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Zig: Pointer Stability for ArrayLists
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A better SQL in 11 lines of code
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Rust: The never type has been merged into nightly
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Rust 1.98 got a P-critical miscompilation
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Canonical Backs New Project to Translate Large C Codebases into Safe Rust
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GPU Offload in Rust: Portable, Safe, and Fast
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🍣 Sushi RS: SVG Sushi Components for Rust Frontends.
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Sep 2026
Index
What are some of the best open-source Language projects in Rust? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | rust | 117,431 |
| 2 | sway | 61,456 |
| 3 | slint | 23,700 |
| 4 | RustPython | 22,328 |
| 5 | melody | 4,743 |
| 6 | cheats.rs | 4,564 |
| 7 | gluon | 3,441 |
| 8 | erg | 2,859 |
| 9 | kcl | 2,408 |
| 10 | ante | 2,337 |
| 11 | mun | 2,130 |
| 12 | ZoKrates | 1,873 |
| 13 | whatlang-rs | 1,087 |
| 14 | koto | 882 |
| 15 | csml-engine | 720 |
| 16 | otterlang | 664 |
| 17 | redscript | 513 |
| 18 | wu | 484 |
| 19 | LO | 477 |
| 20 | pen | 475 |
| 21 | dictpress | 468 |
| 22 | endbasic | 384 |
| 23 | Clue | 378 |
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